Carried away: The inside story of how the Carl Vinson's canceled port visit sparked a global crisis

In early April, officials at U.S. Pacific Command were developing plans to respond to a sharp rise in tensions with North Korea. Defense Secretary James Mattis ordered PACOM Commander Adm. Harry Harris to come up with “robust and sustainable” options for North Korea if President Trump ordered a strike on the rogue regime, according to four defense officials who spoke on background.

Harris was traveling in Washington away from his Hawaii base of operations, something that he dislikes because, in his view, something always seems to happen when he’s not in his office. At one point that week, top PACOM officials called Harris to recommend that Vinson cancel its upcoming trip to Australia and make its way back to the waters near North Korea where the carrier had just been in March, thus serving as one of the responses to Mattis’s directive that they explore military options for the Trump administration.

The plan was to truncate a secretive exercise with the Australians near Indonesia, to cancel Vinson’s visit to Perth and then head the direction of the Korean Peninsula — meaning Vinson would be off North Korea by the end of the month.